package map_;

import java.util.HashMap;

public class MapSummary {
    public static void main(String[] args) {
//        验证hashMap的替换机制
//        key不替换，value会替换
        HashMap hashMap = new HashMap();
        hashMap.put("1","lx");
        hashMap.put("1","th");
        System.out.println(hashMap);
    }
}
